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