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