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)(35,43)(36,41)(37,42)(38,40)(39,45)(44,48)(46,47)(1,3,5,11)(2,6,8,9)(4,10,12,16)(7,13,14,15)(33,35,37,45)(34,39,42,43)(36,46,38,44)(40,47,41,48)(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)(34,40)(35,44)(36,38)(41,42)(45,46)(47,48)(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)(34,41,42,40)(35,44,45,46)(39,47,43,48)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.