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