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