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