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