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