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