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