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