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