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