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