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