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