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