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