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