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