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