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