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