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