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