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