One vertex per element, one color per generator, with an edge from x to x·s.
(2,8)(5,6)(9,21)(10,22)(11,12)(14,19)(16,25)(17,20)(23,31)(24,26)(27,32)(28,29)(33,34,39,43)(35,40,46,55)(36,48,50,56)(37,42,38,51)(41,52,57,49)(44,58,60,63)(45,54,47,61)(53,62,64,59)(1,2,7,12)(3,9,15,24)(4,16,18,22)(5,8,6,11)(10,20,25,17)(13,27,30,31)(14,26,19,21)(23,28,32,29)(33,35,39,46)(34,40,43,55)(36,44,50,60)(37,45,38,47)(41,53,57,64)(42,54,51,61)(48,58,56,63)(49,59,52,62)(1,3,7,15)(2,9,12,24)(4,13,18,30)(5,19,6,14)(8,21,11,26)(10,23,25,32)(16,27,22,31)(17,29,20,28)(33,36)(34,41)(35,44)(37,49)(38,52)(39,50)(40,53)(42,56)(43,57)(45,59)(46,60)(47,62)(48,51)(54,63)(55,64)(58,61)(1,4)(2,10)(3,13)(5,17)(6,20)(7,18)(8,22)(9,23)(11,16)(12,25)(14,28)(15,30)(19,29)(21,31)(24,32)(26,27)(33,37,39,38)(34,42,43,51)(35,45,46,47)(36,49,50,52)(40,54,55,61)(41,56,57,48)(44,59,60,62)(53,63,64,58)(1,5,7,6)(2,11,12,8)(3,14,15,19)(4,17,18,20)(9,21,24,26)(10,16,25,22)(13,28,30,29)(23,31,32,27)(34,43)(35,46)(41,57)(42,51)(44,60)(45,47)(48,56)(59,62)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.