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