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