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