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