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