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