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