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