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