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