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