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