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