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