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