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