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