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