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