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