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