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