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