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