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