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