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