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