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