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)(11,15)(12,13)(14,16)(17,18,22,27)(19,26,29,25)(20,31,30,32)(21,24,28,23)(1,3,5,4)(2,6,8,7)(9,10)(11,14)(12,13)(15,16)(17,19,22,29)(18,25,27,26)(20,24,30,23)(21,32,28,31)(10,13)(14,15)(17,20,23,19,22,30,24,29)(18,26,28,31,27,25,21,32)(9,11,12,16)(10,14,13,15)(17,21,23,18,22,28,24,27)(19,26,30,31,29,25,20,32)(1,4,5,3)(2,7,8,6)(18,27)(21,28)(25,26)(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.