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