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