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