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)(17,18,20,22)(19,23,24,21)(25,26)(27,32)(28,30)(29,31)(1,3)(2,5)(4,8)(6,7)(10,14)(11,16)(25,27,29,28)(26,30,31,32)(2,4)(3,7)(9,11,13,16)(10,15,14,12)(17,18)(19,23)(20,22)(21,24)(25,28,29,27)(26,30,31,32)(1,4,6,2)(3,8,7,5)(9,10)(11,15)(12,16)(13,14)(17,19,20,24)(18,21,22,23)(25,26)(27,32)(28,30)(29,31)(1,5,6,8)(2,7,4,3)(9,12,13,15)(10,16,14,11)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.