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