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)(11,13)(12,14)(15,16)(17,18,21,26)(19,28,20,24)(22,27,23,32)(25,29,30,31)(1,3,5,8)(2,6,4,7)(9,11,12,15)(10,13,14,16)(17,18)(19,25)(20,30)(21,26)(22,32)(23,27)(24,29)(28,31)(10,14)(13,16)(17,19,21,20)(18,24,26,28)(22,31,23,29)(25,27,30,32)(1,4,5,2)(3,6,8,7)(17,20,21,19)(18,25,26,30)(22,31,23,29)(24,27,28,32)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.