One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(3,4)(5,12)(6,10)(7,16)(8,11)(9,13)(14,18)(15,17)(19,20,23,25)(21,27,28,34)(22,30,32,26)(24,31,33,29)(3,5)(4,9)(6,13)(7,14)(8,15)(10,17)(11,18)(12,16)(19,21)(20,24)(22,31)(23,28)(25,33)(26,34)(27,30)(29,32) involution — undirected(3,6,8,7)(4,10,11,16)(5,13,15,14)(9,17,18,12)(22,32)(26,30)(27,34)(29,31)(3,6,8,7)(4,10,11,16)(5,14,15,13)(9,12,18,17)(20,25)(21,28)(26,30)(29,31)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.