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