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