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