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