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