One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,8)(5,7)(9,10)(11,15)(12,14)(13,16)(17,18,23,27)(19,21,29,24)(20,25,30,31)(22,32,28,26)(1,3,6,2)(4,8,5,7)(9,11,12,16)(10,13,14,15)(17,19)(18,24)(20,25)(21,27)(22,32)(23,29)(26,28)(30,31)(10,14)(13,15)(17,20,23,30)(18,25,27,31)(19,28,29,22)(21,26,24,32)(1,4,6,5)(2,7,3,8)(10,14)(13,15)(17,21,23,24)(18,19,27,29)(20,26,30,32)(22,25,28,31)(1,5,6,4)(2,7,3,8)(11,16)(13,15)(17,22,23,28)(18,26,27,32)(19,20,29,30)(21,31,24,25)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.