i found some of this on a dutch tab site (tabsrus.nl) and decided to add to it. 
the original tabber left no name so i can't give him any credit but you can find
his tab at that site

rhythm guitar (improvise around these riffs, but don't stray too far. it is rhythm after all)

 |Am riff            |Dm riff            |Em riff
e|-------------------|-------------------|-------------------|
B|-------------------|-------------------|-------------------|
G|-------------------|----------5--5-5-7-|----------7--7-7-9-|
D|----------5--5-5-7-|------5h7----------|------7h9----------|
A|------5h7----------|-/5----------------|-/7----------------|
E|-/5----------------|-------------------|-------------------|

(sounds oddly familiar to strange brew doesnt it)

for those new to the blues, the order is Am, Am, Am, Am, Dm, Dm, Am, Am, Em, Dm, Am, Am

lead guitar
 intro
 |                    |repeat              |                    |repeat bar one again|
e|-/5-----------------|--------------------|-/5-----------------|--------------------|
B|-/5-----------------|--------------------|-/5-----------------|--------------------|
G|-/5--7b-7p5-----5---|--------------------|-/5--7b-7p5----5h7~-|--------------------|
D|-------------7----7-|--------------------|-------------7------|--------------------|
A|--------------------|--------------------|--------------------|--------------------|
E|--------------------|--------------------|--------------------|--------------------|
 |                    |gradually release bend
e|-/5-----------------|--------------------------|
B|-/5-----------------|--------------------------|
G|-/5--7b-7p5----7b9~-|-7r-7r-7r-7~--7p5---------|
D|-------------7------|------------------7~~---7-|
A|--------------------|--------------------------|
E|--------------------|--------------------------|

Verse
very hard to hear. not necessary. improvise on the G scale on these notes because im not gonna
tab what the human ear can barely detect. this will get you started
e|--------10-----------------------------------|-----|
B|-10b-------13p10h13p10h13p10h13p10h13p10-10b-|-----|
G|---------------------------------------------|-----|
D|---------------------------------------------|-5h7-| < at the very end of the first verse, do this
A|---------------------------------------------|-----|
E|---------------------------------------------|-----|

Verse 2 
(guitar is easier to hear but there is still the quiet guitar playing, if you have an extra
guitarist, put him to good use by doing more improvising from the first verse)
e|-----10-|-8-10br-8---------------|-----------------|---------------------|------------|
B|--------|----------10------------|------8----------|-5h8--5h8--5h8--5h8~-|------------|
G|-9b-----|---------------7-5-7--5-|-7b-9---9-7-9-7b-|---------------------|-9-7-7-7--5-|
D|--------|------------------------|-----------------|---------------------|------------|
A|--------|------------------------|-----------------|---------------------|------------|
E|--------|------------------------|-----------------|---------------------|------------|

e|---------------|
B|---------------|
G|---------5-----|
D|-----5h7---5-7-|
A|-5h7-----------|
E|---------------|
play this bar for some good closure on the verse immediately after the 9-7-7-7-5 riff

Solo (one of my favourite actually)
 |                              |repeat first bar|                        |repeat first bar|
e|----------12----------12------|----------------|------------12--------5-|----------------|
B|----13----------13------------|----------------|------13----------13--6-|----------------|
G|-14----14----14----14----14~~~|----------------|---14----14----14-----7-|----------------|
D|------------------------------|----------------|------------------------|----------------|
A|------------------------------|----------------|------------------------|----------------|
E|------------------------------|----------------|------------------------|----------------|

e|-----------12--------7--7-75-5----------------|
B|-----13----------13--8--8-86-6----------------|
G|--14----14----14-----9--9-97-7--7br-5---------|
D|----------------------------------------7p5h7~-| and now for the fun part
A|-----------------------------------------------|
E|-----------------------------------------------|

rhythm for fast part
 |A riff            |D riff            |E riff  (the song goes frmo minor to major here)
e|------------------|------------------|------------------|
B|------------------|------------------|------------------|
G|------------------|---------5-5br----|---------7-7br----|
D|---------5-5br----|---5-5h7--------7-|---7-7h9--------7-|
A|---5-5h7--------7-|-5----------------|-7----------------|
E|-5----------------|------------------|------------------|

lead for fast part, pretty much exactly what was tabbed already, with some adjustments

e|-------------8b------------8----------------10br-p8h10-8b------10b--8------8b-|
B|-10-10-10-10------10br--10---10-8---8--10b-----------------10----------10-----|
G|----------------------------------9-------------------------------------------|
D|------------------------------------------------------------------------------|
A|------------------------------------------------------------------------------|
E|------------------------------------------------------------------------------|

e|-------------------------------8-10-10br-----8b--20br-20~-20-17----17---------|
B|-8b--------------------10--10------------10---------------------20----20-20b--|
G|-----9-7-5-5br----7----------------------------------------------------------|
D|---------------7--7----------------------------------------------------------|
A|------------------------------------------------------------------------------|
E|------------------------------------------------------------------------------|

e|-17-------------------------------|
B|----20-17------17-----------------|
G|-----------19b----19-17----17-19b-|
D|------------------------19--------|
A|----------------------------------|
E|----------------------------------|

Fast Verse
lead. here i just play the rhythm guitar's chords and hammer on for some emotion. for example:
 |A               |D
e|----------------|----------------|----------------|
B|----------------|-----7--7-----7-|-----9--9-----9-|
G|-----6--6-----6-|-----7--7-5h7-7-|-----9--9-7h9-9-|
D|-----7--7-5h7-7-|-----7----5h7-7-|-----9----7h9-9-|
A|-----7----5h7-7-|-5-5-5----------|-7-7-7----------|
E|-5-5-5----------|----------------|----------------|

End

e|-/5-----------------|-/5--------------------|-/5--------------------------------|
B|-/5-----------------|-/5--------------------|-/5--------------------------------|
G|-/5--7b-7p5-----5---|-/5--7b-7p5-7--5h7-5~~-|-/5--7b-5h7-7-7b--7r-7r-7r-5h7-7~~-|
D|-------------7----7-|-----------------------|-----------------------------------|
A|--------------------|-----------------------|-----------------------------------|
E|--------------------|-----------------------|-----------------------------------|

e|-/5-----------------|-/5------------5--5---5-53-3------------|-10b-10-8---------------5-|
B|-/5-----------------|-/5------------6----6---64-4------------|----------10b-8---------5-|
G|-/5--7b-7p5---5-5---|-/5--7b-7p5----7--------75-5--5-7-5-7-5-|----------------9-7-9b--5-|
D|------------7-----7-|------------7----------------------------|------------------------7-|
A|--------------------|-----------------------------------------|------------------------7-|
E|--------------------|-----------------------------------------|------------------------5-|
finally done. sorry if its a mess but its all right i think