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