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