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