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