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