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