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