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