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