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