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