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