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