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