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