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