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