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