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