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