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