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