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