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