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