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