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