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)(11,18)(12,15)(13,16)(14,17)(19,23)(20,21)(22,24)(28,36)(31,38)(34,40)(37,39)(1,3,6,4)(2,7,5,8)(9,11,14,16)(10,13,17,18)(12,20,22,19)(15,23,24,21)(25,27,29,35)(26,30,32,33)(28,34,36,40)(31,37,38,39)(1,4,6,3)(2,8,5,7)(9,10)(11,13)(12,15)(14,17)(16,18)(19,21)(20,23)(22,24)(25,28,29,36)(26,31,32,38)(27,34,35,40)(30,37,33,39)(1,5,6,2)(3,8,4,7)(9,12,14,22)(10,15,17,24)(11,19,16,20)(13,21,18,23)(25,26)(27,30)(28,31)(29,32)(33,35)(34,37)(36,38)(39,40)(9,13)(10,16)(11,17)(12,21)(14,18)(15,20)(19,24)(22,23) 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.