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