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