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