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