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