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