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