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)(11,22)(12,23)(13,20)(14,15)(16,24)(17,21)(18,19) involution — undirected(1,3,5,4)(2,6,8,7)(9,11,15,19)(10,18,14,22)(12,21,20,24)(13,17,23,16)(1,3,5,4)(2,7,8,6)(9,12,15,20)(10,19,14,11)(13,24,23,21)(16,22,17,18)(1,3,5,4)(2,7,8,6)(9,13)(10,20)(11,17)(12,14)(15,23)(16,19)(18,24)(21,22)(1,4,5,3)(2,6,8,7)(9,14)(10,15)(11,12)(13,18)(16,24)(17,21)(19,20)(22,23)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.