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