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