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)(15,25)(16,21)(17,22)(18,33)(19,24)(20,23)(26,42)(27,36)(28,35)(29,37)(30,44)(31,41)(32,40)(34,39)(38,43) involution — undirected(1,2)(3,4)(5,7,9,8)(6,10,12,11)(13,15)(14,21)(16,19)(17,30)(18,27)(20,29)(22,38)(23,36)(24,25)(26,31)(28,34)(32,43)(33,37)(35,41)(39,42)(40,44)(2,4)(13,16,19,15)(14,21,24,25)(17,28,32,26)(18,27,20,29)(22,35,40,42)(23,37,33,36)(30,31,43,34)(38,39,44,41)(2,4)(5,7,9,8)(6,11,12,10)(13,17)(14,22)(15,26)(16,28)(18,31)(19,32)(20,34)(21,35)(23,39)(24,40)(25,42)(27,43)(29,30)(33,41)(36,38)(37,44)(5,8,9,7)(6,11,12,10)(13,18,19,20)(14,23,24,33)(15,27,16,29)(17,31,32,34)(21,36,25,37)(22,39,40,41)(26,43,28,30)(35,38,42,44)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.