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