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