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