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