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