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