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