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