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