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