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