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