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