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