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