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