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