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