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