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