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