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