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