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