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