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)(17,18,23,27)(19,28,29,43)(20,25,22,37)(21,34,36,40)(24,38,39,32)(26,30,42,35)(31,44,33,48)(41,47,45,46)(1,3,4,11,5,10,13,14)(2,6,7,9,8,15,12,16)(19,29)(24,39)(28,43)(31,33)(32,38)(41,45)(44,48)(46,47)(17,19,30,46,22,33,21,32,23,29,35,47,20,31,36,38)(18,24,40,48,25,41,26,28,27,39,34,44,37,45,42,43)(3,10)(6,15)(9,16)(11,14)(17,20,23,22)(18,25,27,37)(19,31,29,33)(21,30,36,35)(24,41,39,45)(26,34,42,40)(28,44,43,48)(32,46,38,47)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.