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