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