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