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