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