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