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