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