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