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