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