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