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