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)(17,18,22,21)(19,20,24,23)(25,26)(27,28)(29,31)(30,32)(1,3,6,4)(2,5,8,7)(9,10,13,15)(11,16,12,14)(17,19,22,24)(18,23,21,20)(25,27,29,32)(26,28,31,30)(1,3,6,4)(2,7,8,5)(9,11,13,12)(10,14,15,16)(17,20)(18,19)(21,24)(22,23)(25,27)(26,30)(28,31)(29,32)(1,4,6,3)(2,7,8,5)(9,12,13,11)(10,14,15,16)(17,21,22,18)(19,20,24,23)(1,5,6,7)(2,4,8,3)(9,10)(11,14)(12,16)(13,15)(17,20)(18,24)(19,21)(22,23)(25,28,29,30)(26,27,31,32)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.