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