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