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