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