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