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