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