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