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