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