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