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