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