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