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