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