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