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