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