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