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