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)(17,18,23,27)(19,24,28,30)(20,22,26,32)(21,25,31,29)(33,34,39,40)(35,36,41,46)(37,38,47,48)(42,44,45,43)(2,7)(4,14)(8,11)(10,15)(17,19)(18,24)(20,29)(21,22)(23,28)(25,26)(27,30)(31,32)(33,35)(34,36)(37,45)(38,43)(39,41)(40,46)(42,47)(44,48) involution — undirected(2,7)(4,14)(8,11)(10,15)(19,28)(21,31)(24,30)(25,29)(34,40)(35,41)(37,47)(43,44) involution — undirected(1,3)(2,8)(4,15)(5,9)(6,13)(7,11)(10,14)(12,16)(17,20)(18,22)(19,29)(21,24)(23,26)(25,28)(27,32)(30,31)(33,36,39,46)(34,41,40,35)(37,43,47,44)(38,42,48,45)(1,4)(2,9)(3,10)(5,11)(6,14)(7,12)(8,16)(13,15)(17,21)(18,25)(19,22)(20,30)(23,31)(24,26)(27,29)(28,32)(33,37)(34,38)(35,42)(36,44)(39,47)(40,48)(41,45)(43,46) involution — undirected(1,5,6,16)(2,10,7,15)(3,12,13,9)(4,11,14,8)(17,22)(18,26)(19,21)(20,27)(23,32)(24,25)(28,31)(29,30)(33,38)(34,37)(35,43)(36,45)(39,48)(40,47)(41,44)(42,46)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.