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