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