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