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