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