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