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