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