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