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