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)(13,17)(14,16)(15,18)(19,20)(21,24)(22,25)(23,26)(27,34)(28,32)(29,31)(30,33) involution — undirected(3,4,6,7)(5,10,9,8)(19,21,22,28)(20,24,25,32)(23,27,30,29)(26,34,33,31)(11,13,14,18)(12,15,16,17)(20,25)(21,27)(23,30)(24,31)(28,29)(32,34)(3,5,6,9)(4,8,7,10)(12,16)(15,17)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.