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