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