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