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