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