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