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