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