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