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