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