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