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