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