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