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