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