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