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