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