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