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