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)(18,24)(19,27)(20,22)(21,25)(26,30)(28,32)(1,3)(2,6)(4,7)(5,8)(9,11)(10,12)(13,15)(14,16)(17,18,20,30,23,26,22,24)(19,28,31,32,27,25,29,21)(1,4,5,2)(3,7,8,6)(10,15)(11,16)(17,19,23,27)(18,25,26,28)(20,31,22,29)(21,24,32,30)(3,8)(6,7)(9,12,14,13)(10,11,15,16)(17,20,23,22)(18,24,26,30)(19,29,27,31)(21,28,32,25)(9,13,14,12)(10,11,15,16)(17,21,20,28,23,32,22,25)(18,19,30,31,26,27,24,29)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.