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