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