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