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