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