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