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