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