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)(33,34,38,41)(35,37,40,47)(36,43,46,39)(42,48,44,45)(1,3,7,6)(2,8,9,5)(4,13,15,11)(10,14,12,16)(17,18)(19,24)(20,21)(22,23)(25,29)(26,30)(27,32)(28,31)(33,35,38,40)(34,37,41,47)(36,44,46,42)(39,48,43,45)(2,9)(5,8)(10,12)(14,16)(18,23)(20,29)(24,31)(26,32)(33,36,38,46)(34,39,41,43)(35,42,40,44)(37,45,47,48)(1,4,7,15)(2,10,9,12)(3,11,6,13)(5,14,8,16)(17,19)(18,24)(20,26)(21,30)(22,28)(23,31)(25,27)(29,32)(33,35)(34,37)(36,42)(38,40)(39,45)(41,47)(43,48)(44,46)(1,5,7,8)(2,3,9,6)(4,14,15,16)(10,11,12,13)(17,20)(18,25)(19,26)(21,23)(22,29)(24,27)(28,32)(30,31)(33,36)(34,39)(35,42)(37,45)(38,46)(40,44)(41,43)(47,48)(1,6,7,3)(2,8,9,5)(4,11,15,13)(10,14,12,16)(17,21,22,25)(18,20,23,29)(19,27,28,30)(24,32,31,26)(33,37)(34,40)(35,41)(36,45)(38,47)(39,44)(42,43)(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.