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)(16,23)(20,25)(21,27)(26,28)(29,30)(31,37)(32,36)(33,34)(35,39)(38,43)(40,41)(42,44)(5,6,8,10)(7,9,12,11)(14,18)(19,24)(20,25)(26,28)(30,34)(35,37)(36,40)(42,43)(5,7,8,12)(6,9,10,11)(13,14,17,18)(15,19,22,24)(16,20,23,25)(21,26,27,28)(29,30)(31,35)(32,40)(33,34)(36,41)(37,39)(38,43)(42,44)(1,2)(3,4)(5,6)(7,9)(8,10)(11,12)(13,15,17,22)(14,19,18,24)(16,21,23,27)(20,26,25,28)(29,31)(30,35)(32,38)(33,39)(34,37)(36,42)(40,43)(41,44)(5,7)(6,9)(8,12)(10,11)(13,16)(14,20)(15,21)(17,23)(18,25)(19,26)(22,27)(24,28)(29,32,33,41)(30,36,34,40)(31,38,39,44)(35,42,37,43)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.