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