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