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