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