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