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