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)(9,13)(10,14)(15,18)(16,19)(17,20)(21,22)(23,31)(24,28)(25,38)(26,29)(27,34)(30,40)(32,47)(33,46)(35,49)(36,44)(37,52)(39,42)(41,48)(43,50)(45,51) involution — undirected(5,7,10,17)(6,11,14,20)(8,16,9,15)(12,19,13,18)(21,23,26,33)(22,27,29,42)(24,35,36,32)(25,39,40,34)(28,43,44,41)(30,46,38,31)(37,48,51,50)(45,47,52,49)(2,4)(5,8,10,9)(6,12,14,13)(7,15,17,16)(11,18,20,19)(21,24,26,36)(22,28,29,44)(23,32,33,35)(25,37,40,51)(27,41,42,43)(30,45,38,52)(31,47,46,49)(34,48,39,50)(5,9,10,8)(6,13,14,12)(7,16,17,15)(11,19,20,18)(23,33)(24,36)(27,42)(28,44)(31,46)(34,39)(37,51)(45,52)(6,14)(11,20)(12,13)(18,19)(22,29)(24,36)(27,42)(30,38)(31,46)(32,35)(37,51)(48,50) involution — undirectedA 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.