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