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