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