One vertex per element, one color per generator, with an edge from x to x·s.
(9,10)(11,17)(12,15)(13,16)(14,19)(18,23)(20,22)(21,24)(25,26,29,34)(27,36,37,31)(28,40,41,33)(30,32,43,35)(38,45,50,49)(39,44,51,46)(42,48,53,47)(52,55,56,54)(1,2,4,5)(3,7,8,6)(9,11)(10,14)(12,18)(13,19)(15,21)(16,17)(20,24)(22,23)(25,27,29,37)(26,31,34,36)(28,38,41,50)(30,39,43,51)(32,46,35,44)(33,45,40,49)(42,52,53,56)(47,55,48,54)(2,5)(6,7)(9,12,13,20)(10,15,16,22)(11,18,19,24)(14,21,17,23)(26,32)(27,37)(30,43)(31,44)(33,47)(34,35)(36,46)(38,50)(40,48)(42,53)(45,54)(49,55)(10,16)(14,17)(15,22)(21,23)(25,28,29,41)(26,33,34,40)(27,38,37,50)(30,42,43,53)(31,45,36,49)(32,47,35,48)(39,52,51,56)(44,54,46,55)(1,3,4,8)(2,6,5,7)(11,19)(14,17)(18,24)(21,23)(27,37)(28,41)(31,36)(33,40)(39,51)(42,53)(44,46)(47,48)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.