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