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