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