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