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