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