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