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)(11,13)(12,14)(15,16)(17,18)(19,24)(20,32)(21,26)(22,27)(23,28)(25,30)(29,38)(31,39)(33,37)(34,41)(35,42)(36,43)(40,44)(45,48)(46,47) involution — undirected(2,5)(6,8)(9,11)(10,13)(12,15)(14,16)(17,19)(18,24)(20,33)(21,34)(22,30)(23,31)(25,27)(26,41)(28,39)(29,35)(32,37)(36,44)(38,42)(40,43)(45,46)(47,48) involution — undirected(10,14)(11,15)(17,20,23,30)(18,25,28,32)(19,22,31,33)(21,34,36,44)(24,37,39,27)(26,40,43,41)(29,35,45,46)(38,47,48,42)(1,3,4,7)(2,6,5,8)(10,14)(13,16)(17,21,33,46,23,36,22,35)(18,26,37,47,28,43,27,42)(19,29,30,44,31,45,20,34)(24,38,25,40,39,48,32,41)(2,5)(6,8)(17,22,23,33)(18,27,28,37)(19,30,31,20)(21,35,36,46)(24,25,39,32)(26,42,43,47)(29,44,45,34)(38,40,48,41)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.