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