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