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