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