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