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)(10,12)(13,14,18,23)(15,24,28,20)(16,29,32,36)(17,19,33,22)(21,31,39,34)(25,40,27,35)(26,38,42,44)(30,37,43,41)(2,4)(5,7,8,11)(6,10,9,12)(14,19)(15,25)(17,33)(21,36)(22,23)(26,30)(27,28)(29,39)(31,34)(35,40)(38,44)(42,43)(13,15,18,28)(14,20,23,24)(16,30,32,43)(17,25,33,27)(19,35,22,40)(21,38,39,44)(26,34,42,31)(29,41,36,37)(13,16,18,32)(14,21,23,39)(15,26,28,42)(17,34,33,31)(19,36,22,29)(20,37,24,41)(25,30,27,43)(35,44,40,38)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.