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