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