One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,8,6,10,5,9)(3,11,12,7,14,15,13,16)(17,18,20,23,21,24,28,31)(19,25,27,32,26,22,29,30)(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)(20,27)(21,26)(23,30,31,32)(28,29)(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)(19,26)(22,25)(27,29)(30,32)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.