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