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