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