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