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