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