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