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