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