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