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