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