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