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