Intro and main riff - 

E|-------------------|------|
B|-------------------|------|
G|-------------------|------|
D|-------------------|------| - this bit comes in every so often
A|-------------------|------|
|-1h3-3-3-3-2-1-1h3-|-6~/1-|
 ^repeat this several times

Chorus - 

EE|-------------------------------------------------|
BE|-------------------------------------------------|
|-5-5-5-5-5-5-5-5-5-5-5-5/8-8-8-8-8-8-8-8-8-8-8-8-|
|-5-5-5-5-5-5-5-5-5-5-5-5/8-8-8-8-8-8-8-8-8-8-8-8-|
|-3-3-3-3-3-3-3-3-3-3-3-3/6-6-6-6-6-6-6-6-6-6-6-6-|
E|-------------------------------------------------|
  ^repeat this twice

Post chorus - 

E|---------------|
B|---------------|
G|---------------|
D|---------------|
A|---6-6^/2-5----|
E|-0----------5^-|

Repeat the verse and chorus AND post chorus again.  The part after the post
chorus is this - 

E|---------------|
B|---------------|
G|---------------|
D|---------------|
A|-5^------------|
E|--------5^-----|