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