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