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