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