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