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