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