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