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