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