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