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