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