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