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