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