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