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