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