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