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