One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(4,7)(5,9)(11,12)(13,16)(14,17)(15,18)(19,22)(20,25)(21,23)(24,26) involution — undirected(3,4)(5,8)(6,7)(9,10)(11,13)(12,16)(14,21)(15,20)(17,23)(18,25)(19,24)(22,26) involution — undirected(12,17)(14,22)(16,23)(18,19)(21,26)(24,25) involution — undirected(4,7)(8,10)(12,18)(13,20)(17,19)(21,26) involution — undirected(3,5,6,9)(4,8,7,10)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.