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