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