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