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