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