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