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