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