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