Try writing the verses in barre chords like you normally do (if I read correctly) and then play the same thing in power chords for the chorus. You can also mix up the strumming patterns to make things sound more unique (arpeggios are always cool too). Here's a couple of examples:
Verse:
e|77777777|55555555|33333333|
b|77777777|55555555|33333333|
g|88888888|66666666|44444444|
d|99999999|77777777|55555555|
a|99999999|77777777|55555555|
e|77777777|55555555|33333333|
v^v^v^v^ v^v^v^v^ v^v^v^v^
Chorus:
e|----------|---------|----------|
b|----------|---------|----------|
g|----------|---------|----------|
d|----------|---------|----------|
a|99--99--|77--77--|55--55--|
e|77--77--|55--55--|33--33--|
v^ v^ v^ v^ v^ v^
OR
Verse:
e|-----7-|-----5-|-----3-|
b|-----7-|-----5-|-----3-|
g|-----7-|-----5-|-----3-|
d|-----9-|-----7-|-----5-|
a|--9----|--7----|--5----|
e|7------|5------|3------|
v v v v v v v v v
Chorus:
e|--------|---------|--------|
b|--------|---------|--------|
g|--------|---------|--------|
d|--------|---------|--------|
a|999999|777777|555555|
e|777777|555555|333333|
v^v^v^ v^v^v^ v^v^v^
v=downstroke
^=upstroke
One way to make this sound really cool is to play the verses clean (or with a really trippy effect like a phaser) and then kick on your distortion for the chorus.