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