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