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