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