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