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