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