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