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)(25,26,31,34)(27,32,29,28)(30,33,39,38)(35,40,37,36)(1,2,4,5)(3,6,7,8)(9,10,14,18)(11,13,17,15)(12,16,20,23)(19,21,24,22)(25,27,31,29)(26,28,34,32)(30,35,39,37)(33,36,38,40)(1,2)(3,6)(4,5)(7,8)(9,11)(10,15)(12,19)(13,18)(14,17)(16,22)(20,24)(21,23)(25,28,31,32)(26,27,34,29)(30,36,39,40)(33,35,38,37)(1,2)(3,6)(4,5)(7,8)(9,11)(10,13)(12,19)(14,17)(15,18)(16,21)(20,24)(22,23)(25,26)(27,28)(29,32)(30,38)(31,34)(33,39)(35,40)(36,37) 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)(25,29,31,27)(26,32,34,28)(30,37,39,35)(33,40,38,36)(9,13)(10,17)(11,18)(12,21)(14,15)(16,24)(19,23)(20,22)(25,30)(26,33)(27,35)(28,36)(29,37)(31,39)(32,40)(34,38) 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.