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