One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(5,6)(7,11)(8,10)(9,12) involution — undirected(5,7,8,12)(6,9,10,11)(13,14,18,23)(15,24,29,35)(16,20,25,22)(17,31,32,36)(19,26,34,28)(21,37,38,30)(27,41,43,33)(39,40,44,42)(2,4)(7,12)(9,11)(13,15,25,26,18,29,16,28)(14,19,20,35,23,34,22,24)(17,27,37,40,32,43,30,42)(21,33,36,44,38,41,31,39)(6,10)(9,11)(13,16,18,25)(14,20,23,22)(15,26,29,28)(17,30,32,37)(19,24,34,35)(21,36,38,31)(27,40,43,42)(33,39,41,44)(13,17,25,37,18,32,16,30)(14,21,20,36,23,38,22,31)(15,27,26,40,29,43,28,42)(19,33,35,44,34,41,24,39)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.