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