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