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