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)(25,26,32,36)(27,37,29,33)(28,34,39,38)(30,31,35,40)(3,7)(6,8)(10,14)(15,22)(16,19)(23,24)(25,27,32,29)(26,33,36,37)(28,35,39,30)(31,38,40,34)(1,2)(3,6)(4,5)(7,8)(9,10)(11,15)(12,16)(13,14)(17,22)(18,23)(19,21)(20,24)(25,28,32,39)(26,34,36,38)(27,35,29,30)(31,37,40,33)(1,3)(2,6)(4,7)(5,8)(9,10)(11,15)(12,19)(13,14)(16,21)(17,22)(18,24)(20,23)(25,29,32,27)(26,33,36,37)(28,30,39,35)(31,38,40,34)(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)(26,31)(27,28)(29,39)(32,35)(33,38)(34,37)(36,40) involution — undirected(9,12)(10,16)(11,18)(13,21)(14,19)(15,23)(17,20)(22,24)(25,31)(26,35)(27,38)(28,37)(29,34)(30,36)(32,40)(33,39) 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.