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