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