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