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