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