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