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