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