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