One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,3,4)(21,22,27,39,26,30,25,31)(23,32,38,28,35,45,34,42)(24,29,40,50,36,44,37,43)(33,46,49,41,47,52,48,51)(5,6)(7,11)(8,12)(9,10)(13,19)(14,17)(15,20)(16,18)(21,23,26,35)(22,28,30,42)(24,33,36,47)(25,38,27,34)(29,41,44,51)(31,45,39,32)(37,49,40,48)(43,52,50,46)(2,4)(6,10)(11,17)(12,18)(19,20)(21,24,26,36)(22,29,30,44)(23,33,35,47)(25,37,27,40)(28,41,42,51)(31,43,39,50)(32,46,45,52)(34,48,38,49)(5,7,9,14)(6,11,10,17)(8,15,16,13)(12,20,18,19)(22,30)(24,36)(28,42)(31,39)(32,45)(33,47)(37,40)(48,49)(5,8,9,16)(6,12,10,18)(7,13,14,15)(11,19,17,20)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.