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