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