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