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