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