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