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