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