The catchy riff you are probably looking for:
    
      4x
E-----------------|-------------------------------|-----------------------|
b-------3-4p3---3-|-----3-4-3-1-----3-4-3h4p3p1h3-|-----------------------|
g-----3--(3)--(3)-|---1--(1)------1--(1)----------|-----------------------|
d---5--------5----|-3-----------3-----------------|-----------------------|
a-----------------|-------------------------------|-----------------------|
e-----------------|-------------------------------|-----------------------|

      2x
E------------------|-------------------------------|-----------------------|
b-------3-4p3---3--|-----3-4-3-1-----3-4-3-1-------|-----------------------|
g-----3--(3)---(3)-|---1--(1)-------(1)-(1)--------|-----------------------|
d---5---------5----|-3-----------3-----------------|-----------------------|
a------------------|-------------------------------|-----------------------|
e------------------|-------------------------------|-----------------------|

Note: it is most easily played grabbing barre chords Cm7 and Bb7. 


This riff is played throughout the song,  
listen to the song to sort out how 
often each part is played. Also listen closely, 
some of the notes are played very gentle like a ghost note, 
I tried putting some in like this (1).