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