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