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