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