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)(11,12,16,17)(13,18,14,15)(19,20,24,25)(21,29,30,26)(22,27,32,31)(23,33,34,28)(4,7)(8,9)(11,13,16,14)(12,15,17,18)(20,25)(21,30)(22,32)(23,34)(3,5,6,10)(4,8,7,9)(11,14,16,13)(12,15,17,18)(19,21,24,30)(20,26,25,29)(22,33,32,28)(23,31,34,27)(3,4)(5,8)(6,7)(9,10)(11,15)(12,13)(14,17)(16,18)(19,22)(20,27)(21,28)(23,29)(24,32)(25,31)(26,34)(30,33) involution — undirected(19,23,24,34)(20,28,25,33)(21,31,30,27)(22,29,32,26)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.