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