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