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