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