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