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