The guitar parts for this song are nice and easy. They are played quite fast, but you'll crack that with some practice. Just remember the golden rule - get it right slow first, then build up the speed.
Although there are various guitar overdubs chucked into the song, the main guitar swaps between 3 riffs only....
Riff 1: Stab / mute the C major chord 3 times. Simple as that!
Riff 2: Now descend through the double stops. Use alternate picking to get fast. Use your thumb to mute out the other 4 strings. If you aren't able to thumb mute that many strings comfortably, then just extend the tips of your fingers as they play the double stops - just enough to touch / mute the adjacent G string.
Repeat Riffs 1 and 2 until the verses where Riff 3 comes in....
Riff 3: Play a little repetitive lick on the G string - all just using 3 notes! Some of the notes are muted very quickly. Nothing too hard, just release pressure from your finger - enough to mute the string as you move between the 3 notes.
And that's the main guitar for the whole song! Use a bright, clean guitar tone, no distortion. Think funk / pop for your sound. The band use a delay pedal effect on Riff 2, on a light - moderate setting....so if you have a delay pedal too - you know when to use it!