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