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