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