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