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