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