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