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