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