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