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