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