This song has two guitars playing for a lot of the song.  This tab is how I play the 
on one guitar so its kind of a hybrid of the two parts.
Also, the song is in an open G tuning, but in order to get that tuning sounding right, 
open E tuning with a Capo on the 3rd fret.
So open its:
E, G#, B, E, B, E

But once the capo is added the strings are G, B, D, G, D, G.

Capo on 3:  (All tab from the Capo)
Intro:
       G
G|--7--7-------7--------7------5--4---2---0---------------------------------|
D|--5--5-------5--------5------0--0---0---0---------------------------------|
G|--0--0-------0--------0------0--0---0---0---------------------------------|
D|--------------------------------------------------------------------------|
B|--------------------------------------------------------------------------|
G|---------0-------0-----------0------0-------------------------------------|
       C
G|------------4----------4h5----5-------5-----------------------------------|
D|-----0h2---------2--------------2-----------------------------------------|
G|--------------------------------------------------------------------------|
D|--------------------------------------------------------------------------|
B|--1-------1---------1-------1-----1---------------------------------------|
G|--------------------------------------------------------------------------|
     G
G|--5p4-----4-------4----7--7-----5--5--------------------------------------|
D|--0---------0----------0--0-----0--0--------------------------------------|
G|--0--------------------0--0-----0--0--------------------------------------|
D|--------------------------------------------------------------------------|
B|--------------------------------------------------------------------------|
G|--0----0-------0-------0------0--------0----------------------------------|
       D                                                                                 
        G                                                *Harmonics
G|--0h2----2--2/4----4--4/5-----5--5/7-----7--------7-----4------12---------|
D|--0---------0---------0----------0-------0-------0------0---------12------|
G|--0h2-------2/4-------4/5--------5/7-----0--------0-----0------------12---|
D|--0----0----0---0-----0----0-----0-------------------------------------12-|
B|--------------------------------------------------------------------------|
G|-----------------------------------------0----0---------------------------|
       G
G|--9-----------------------------------9/4---------------------------------|
D|--0------0---------0---------0--------0-0--------5h7------5h7------5h7----|
G|--0--------9h11------9h11------9h11---0-0------0--------0--------0------0-|
D|--------------------------------------------------------------------------|
B|--------------------------------------------------------------------------|
G|--0---0---------0----------0----------0-0----0--------0--------0------0---|
    D       *Riff 1
G|--0h2----2--2/4----4--4/5-----5--5/7--------------------------------------|
D|--0---------0---------0----------0----------------------------------------|
G|--0h2-------2/4-------4/5--------5/7--------------------------------------|
D|--0----0----0---0-----0----0-----0----------------------------------------|
B|--------------------------------------------------------------------------|
G|--------------------------------------------------------------------------|
      Em                                      C                                        G
G|------------------------------------------------------------0-----------0-|
D|--7p5---5-----5----4p2-----2------2---2p0-----0------0--------0---0-------|
G|--0-------0--------0---------0--------0---------0------0------------0-----|
D|--------------------------------------------------------------------------|
B|--5---5-----5------1----1-------1-----------------------------------------|
G|--------------------------------------0-----0-----0-------0-----0-----0---|
     Em                                   C                                   G
G|-------0------0--------0-----0-------------------------------0------0-----|
D|--5------5--------2------2--------9-----9------9h10p9---------------------|
G|--0---------------0---------------0-------0------------12------12-----12--|
D|--------------------------------------------------------------------------|
B|--5--5-----5------1--1-----1----------------------------------------------|
G|----------------------------------0---0-----0----------0---0------0-------|

Verse:
For the verse they just mess around on the chord progression of the song so thats what 
can do but the forms are gonna be a little different with the open tuning. During the 
just mess around and see what you like. You can use these forms as a starting point:
G:
G|---0-----------|
D|---0-----------|
G|---0-----------|
D|---0-----------|
B|---0-----------|
G|---0-----------|
C:
G|---------------|
D|---2-----------|
G|---0-----------|
D|---2-----------|
B|---1-----------|
G|---------------|
D: For the D, play Riff 1 from the intro

     G                        C
Well you send my life a whirling
C                          G
darling when you're twirling
          D
on the floor

Who cares about tomorrow
What more is tomorrow
than another day


       Em   C            G
When you swept me away
Yeah you swept me away

For the chorus I play:
    Em                                                       C
G|---------0-----0------0---------0---0-------0-----------------------------|
D|----0h2----------2----------0h2-------2-----------------------------------|
G|--------------------------------------------------------------------------|
D|--------------------------------------------------------------------------|
B|--5---------5------5------1-------1------1--------------------------------|
G|--------------------------------------------------------------------------|
     G
G|-----------4-----4-------4-----------4-----4---------4--------------------|
D|------0h5----------5-------------0h5----------5---------------------------|
G|--------------------------------------------------------------------------|
D|--------------------------------------------------------------------------|
B|--------------------------------------------------------------------------|
G|--0----------0--------0-------0---------0--------0------------------------|

Then pre second verse thing:
      G
G|-12--12------12--------7---5---4---2---0----------------------------------|
D|-12--12------12--------0---0---0---0---0----------------------------------|
G|-12--12------12--------0---0---0---0---0----------------------------------|
D|--------------------------------------------------------------------------|
B|--------------------------------------------------------------------------|
G|--0--0----0-------0----0-------0---0--------------------------------------|
            C                                                                         G
G|-------5-----5-------5-------5h7----4----2p0----0-------7------5----0-----|
D|--------0------0-------0------------0-------------0-------------------0---|
G|--------------------------------------------------------------------------|
D|--------------------------------------------------------------------------|
B|--------------------------------------------------------------------------|
G|---0/5----5-------5--------5--------0--0------0------0------0-----0-------|
        D       *Riff 1
G|--0h2----2--2/4----4--4/5-----5--5/7--------------------------------------|
D|--0---------0---------0----------0----------------------------------------|
G|--0h2-------2/4-------4/5--------5/7--------------------------------------|
D|--0----0----0---0-----0----0-----0----------------------------------------|
B|--------------------------------------------------------------------------|
G|--------------------------------------------------------------------------|

After this, the verse and chorus just follow the same chord progressions as before.

I see the end of the rainbow
but what more is a rainbow
than colors out of reach?
If you come down to my
window, and I climb out my
window, then we'll get out of reach

Chorus:
and you swept me away

You said with such honest feeling
but what'd you really mean when
you said that I'm your man

Well how my darling can it be
when you have never seen me
and you never will again

Chorus:
that you swept me away

Life is ever changing
but I will always find
a constant and comfort in your love

With your heart my soul is bound
and as we dance I know that
heaven can be found

Well you send my life a whirling
darling when you're twirling
on the floor

Who cares about tomorrow
What more is tomorrow
than another day

Chorus:
When you swept me away
Yeah you swept me away

Outro:
     G
G|-----7-----5----4-----2p0-----------5-----7----4----2p0-----12------------|
D|-----0-----0----0-----0------2------0-----0----0----0-------0-------------|
G|-----0-----0----0-----0-------------0-----0----0----0-------0-------------|
D|--------------------------------------------------------------------------|
B|--------------------------------------------------------------------------|
G|--0-----0-----0-----0-----0------0------0----0----0------0----------------|
Then hit some harmonics....

And that's it!

Thanks,
Mufen