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