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