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