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