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