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