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