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