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