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