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