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