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