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