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