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