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