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