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