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