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