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