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