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)(20,27)(22,29)(23,28)(25,31)(33,34,38,42)(35,43,45,48)(36,41,37,40)(39,46,47,44)(2,7)(4,5)(8,14)(9,10)(11,13)(15,16)(17,18,21,24)(19,22,26,29)(20,28,27,23)(25,32,31,30)(1,3)(2,8)(4,13)(5,11)(6,12)(7,14)(9,15)(10,16)(17,19,21,26)(18,22,24,29)(20,25,27,31)(23,30,28,32)(33,35)(34,39)(36,44)(37,46)(38,45)(40,43)(41,48)(42,47)(1,4,6,5)(2,9,10,7)(3,11,12,13)(8,14,16,15)(17,20,21,27)(18,23,24,28)(19,25,26,31)(22,30,29,32)(33,36,38,37)(34,40,42,41)(35,44,45,46)(39,43,47,48)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.