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