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