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