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