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