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