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