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