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