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