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