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