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