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