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