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