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