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