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