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