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