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