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