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