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