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