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