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