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