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