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