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