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