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