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