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