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