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