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