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