One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,6,4,7)(9,10)(11,13)(12,14)(15,16)(17,18,22,25,23,26,21,31)(19,24,27,30,28,29,32,20)(1,3,5,4)(2,6,8,7)(9,10)(11,15)(12,14)(13,16)(17,18)(19,24)(20,27)(21,25)(22,31)(23,26)(28,29)(30,32)(1,3,5,4)(2,7,8,6)(9,11,12,16)(10,13,14,15)(17,19,23,28)(18,24,26,29)(20,25,30,31)(21,32,22,27)(11,16)(13,15)(17,20,22,24,23,30,21,29)(18,19,25,27,26,28,31,32)(1,4,5,3)(2,7,8,6)(10,14)(13,15)(17,21,23,22)(18,25,26,31)(19,27,28,32)(20,29,30,24)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.