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