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