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