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