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