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