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