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