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