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