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