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