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