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