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