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