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)(9,13)(10,14)(15,16)(17,18,22,21)(19,23,25,27)(20,24,28,29)(26,30,31,32)(33,34)(35,41)(36,46)(37,39)(38,42)(40,43)(44,48)(45,47)(1,3,6,11)(2,7,4,8)(5,10,13,16)(9,14,12,15)(17,19)(18,23)(20,26)(21,27)(22,25)(24,30)(28,31)(29,32)(33,35,40,37)(34,41,43,39)(36,45,38,44)(42,48,46,47)(2,4)(5,13)(7,8)(10,16)(19,25)(20,28)(23,27)(24,29)(33,36,40,38)(34,42,43,46)(35,44,37,45)(39,48,41,47)(1,4,6,2)(3,8,11,7)(5,12,13,9)(10,15,16,14)(17,20,22,28)(18,24,21,29)(19,26,25,31)(23,30,27,32)(33,37,40,35)(34,39,43,41)(36,44,38,45)(42,47,46,48)(1,3)(2,8)(4,7)(5,10)(6,11)(9,15)(12,14)(13,16)(17,21,22,18)(19,27,25,23)(20,24,28,29)(26,30,31,32)(33,38,40,36)(34,42,43,46)(35,45,37,44)(39,48,41,47)(1,5,6,13)(2,9,4,12)(3,10,11,16)(7,14,8,15)(17,19)(18,23)(20,26)(21,27)(22,25)(24,30)(28,31)(29,32)(33,39)(34,35)(36,47)(37,43)(38,48)(40,41)(42,45)(44,46)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.