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