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