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