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