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