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