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