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