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