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)(13,14,18,25,19,24,20,26)(15,27,30,39,31,40,32,21)(16,33,35,41,36,22,17,23)(28,38,29,37,44,43,34,42)(2,4)(13,15)(14,21)(16,34)(17,28)(18,32)(19,31)(20,30)(22,38)(23,42)(24,39)(25,40)(26,27)(29,36)(33,43)(35,44)(37,41) involution — undirected(6,9)(10,12)(13,16,18,35,19,36,20,17)(14,22,25,23,24,33,26,41)(15,28,30,29,31,44,32,34)(21,37,27,43,39,42,40,38)(13,17,20,36,19,35,18,16)(14,23,26,22,24,41,25,33)(15,29,32,28,31,34,30,44)(21,38,40,42,39,43,27,37)(5,7,8,11)(6,10,9,12)(14,24)(21,39)(22,33)(23,41)(25,26)(27,40)(37,42)(38,43)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.