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