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