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