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