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