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