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