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