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