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