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